From patchwork Mon Jun 12 11:30:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rasmus Villemoes X-Patchwork-Id: 1793895 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-rtc-owner@vger.kernel.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=rasmusvillemoes.dk header.i=@rasmusvillemoes.dk header.a=rsa-sha256 header.s=google header.b=PPeFRKHd; dkim-atps=neutral Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4QfqTv1WZpz20Wl for ; Mon, 12 Jun 2023 21:39:31 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236158AbjFLLj2 (ORCPT ); Mon, 12 Jun 2023 07:39:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53724 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233132AbjFLLiX (ORCPT ); Mon, 12 Jun 2023 07:38:23 -0400 Received: from mail-lf1-x12d.google.com (mail-lf1-x12d.google.com [IPv6:2a00:1450:4864:20::12d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8927C46B2 for ; Mon, 12 Jun 2023 04:31:04 -0700 (PDT) Received: by mail-lf1-x12d.google.com with SMTP id 2adb3069b0e04-4f62cf9755eso4832470e87.1 for ; Mon, 12 Jun 2023 04:31:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rasmusvillemoes.dk; s=google; t=1686569463; x=1689161463; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=3z9z5ciNoeXJ2AWju4rHjtXaiiOh78bIeWJwLTwus3M=; b=PPeFRKHdxjy3D5ZD4l2mgjjaksY35u80zNbT6FNhAi8LOtva4YfTWRzvqIvAiNp8MH YZQuLB53OKmCywz9oisNncIqXB/XZt95alq54zepd2gvJ1471ZfWJx1BR0xGLvGx4HaH e+M6VFNfn1OEViwKe5FQHqHevwKHY0DDSh/Fs= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686569463; x=1689161463; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=3z9z5ciNoeXJ2AWju4rHjtXaiiOh78bIeWJwLTwus3M=; b=R7WQfEmC1SQkFLPxE5dnbUCaWpXHDIfjgIkbRzGwdofuUvZNXJafdRhqhJ8ASQtFqq U8Bv8iUmfsQr4CtSR4hqNEjlBPN5cfy1K/rGxy78TIX2zNcnppyH6p21hNCBHtREHhEC b3EENTSClY6Et43RoUkIz+Ik/P+UEW7pAlg+KRcNO7N47N20CiXECDdGWD+qMr160zdd 0ZIvKj1fDM8Hy95+2O3yORdwJEZgWTLlrCp8bkkmOrjElJy7MIkI9zasvhTgEkp0AGou 4BXBPv8rM9NWQybGkQ4MlTPYAoeSAru3IADTc7NSvtSMHxFhI1QegMAc9BQfCgP6iSJr zOoA== X-Gm-Message-State: AC+VfDziGI4hGD0qDM//bwT97KgTf8iHalAuYJ7ajHqTK2QdyapAUGxm 6/ostfQhLSHnsesTx1bELkfMqA== X-Google-Smtp-Source: ACHHUZ4vxQLBHvJAPOH6+6IOEURSMyDzE9pPPiPn3nTWV28Z7V6rSyZLZVJpL/WPQay7byr7cmIzNQ== X-Received: by 2002:a19:ab02:0:b0:4f5:1418:e230 with SMTP id u2-20020a19ab02000000b004f51418e230mr3740416lfe.52.1686569462822; Mon, 12 Jun 2023 04:31:02 -0700 (PDT) Received: from prevas-ravi.prevas.se ([81.216.59.226]) by smtp.gmail.com with ESMTPSA id w26-20020a19c51a000000b004edb8fac1cesm1399320lfe.215.2023.06.12.04.31.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 12 Jun 2023 04:31:02 -0700 (PDT) From: Rasmus Villemoes To: Alessandro Zummo , Alexandre Belloni Cc: Andy Shevchenko , devicetree@vger.kernel.org, Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-rtc@vger.kernel.org, Rasmus Villemoes , linux-kernel@vger.kernel.org Subject: [PATCH 0/8] rtc: isl12022: battery backup voltage and clock support Date: Mon, 12 Jun 2023 13:30:50 +0200 Message-Id: <20230612113059.247275-1-linux@rasmusvillemoes.dk> X-Mailer: git-send-email 2.37.2 MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-rtc@vger.kernel.org The current handling of the low-battery bits in the status register is wrong. The first six patches fix that and implement proper support for RTC_VL_READ. The last two patches allow describing the isl12022 as a clock provider, for now just as a fixed 32kHz clock. They are also tangentially related to the backup battery, in that when the isl12022 is not used as a clock source, one can save some power consumption in battery mode by setting the FOx bits to 0. Rasmus Villemoes (8): rtc: isl12022: remove wrong warning for low battery level dt-bindings: rtc: Move isil,isl12022 from trivial-rtc.yaml into own schema file dt-bindings: rtc: isl12022: add bindings for battery alarm trip levels rtc: isl12022: add support for trip level DT bindings rtc: isl12022: implement RTC_VL_READ and RTC_VL_CLR ioctls rtc: isl12022: trigger battery level detection during probe dt-bindings: rtc: isl12022: add #clock-cells property rtc: isl12022: implement support for the #clock-cells DT property .../bindings/rtc/intersil,isl12022.yaml | 66 +++++++++ .../devicetree/bindings/rtc/trivial-rtc.yaml | 2 - drivers/rtc/rtc-isl12022.c | 140 +++++++++++++++++- 3 files changed, 200 insertions(+), 8 deletions(-) create mode 100644 Documentation/devicetree/bindings/rtc/intersil,isl12022.yaml